Open type needle roller bearings, specifically referring to needle roller bearings with completely open ends and no self sealing/closed end caps (especially common in the stamped outer ring HK series), are an economical choice for compact radial heavy-duty scenarios, different from the single-sided closed BK type and the 2RS type with sealing rings.
| Model | Basic Dimensions | Basic rated dynamic load | Weight | Type | |||
|---|---|---|---|---|---|---|---|
| Inner diameter | Outer diameter | Thickness | Dynamic load | Static load | |||
| [mm] | [mm] | [mm] | (kN) | (kN) | （kg） | ||
| RNA69/28 | 32 | 45 | 30 | 41.8 | 64.7 | 0.133 | open |
| RNA6906 | 35 | 47 | 30 | 43.1 | 69 | 0.125 | open |
| RNA69/32 | 40 | 52 | 36 | 53.5 | 95.7 | 0.172 | open |
| RNA6907 | 42 | 55 | 36 | 54.8 | 100 | 0.2 | open |
| RNA6908 | 48 | 62 | 40 | 71.3 | 134.4 | 0.275 | open |
| RNA6909 | 52 | 68 | 40 | 74.6 | 147.1 | 0.355 | open |
| RNA6910 | 58 | 72 | 40 | 79.1 | 163.8 | 0.32 | open |
| RNA6911 | 63 | 80 | 45 | 99 | 194.2 | 0.475 | open |
| RNA6912 | 68 | 85 | 45 | 103 | 210.8 | 0.51 | open |
| RNA6913 | 72 | 90 | 45 | 107.9 | 226.5 | 0.585 | open |
| RNA6914 | 80 | 100 | 54 | 133.4 | 310.9 | 0.91 | open |
| RNA6915 | 85 | 105 | 54 | 138.3 | 330.5 | 0.96 | open |
| RNA6916 | 90 | 110 | 54 | 143.2 | 350.1 | 1.01 | open |
| RNA6917 | 100 | 120 | 63 | 172.6 | 466.8 | 1.3 | open |
| RNA6918 | 105 | 125 | 63 | 177.5 | 490.3 | 1.36 | open |
| RNA6919 | 110 | 130 | 63 | 182.4 | 514.8 | 1.42 | open |
| NA6900 | 10 | 22 | 22 | 16.3 | 20.9 | 0.04 | open |
| NA6901 | 12 | 24 | 22 | 17.1 | 23 | 0.0445 | open |
| NA6902 | 15 | 28 | 23 | 19.3 | 28.8 | 0.061 | open |
| NA6903 | 17 | 30 | 23 | 20.8 | 32.5 | 0.067 | open |
